Nut-wrench



(No Model.)

J. HARDY & B. DUNN. NUT WRENGH.

I E l C f I" Wilnes$es. Invenfiorv:

mdqwm'ua UNITED STATES PATENT OFFICE.

JAMES HARDY AND BROAD DUNN, OF OLAYVILLE, NEW YORK.

NUT-W RENCH.

SPECIFICATION forming part of Letters Patent N0. 513,233, dated anuary23, 1894.

Applicationiiled March 2, 1893.

To aZt whom it may concern:

Be it known that we, JAMES HARDY and BROAD DUNN, citizens of the UnitedStates,

residing at Olayville, in the county of Oneida and State .of New York,have invented certam new and useful Improvements in Nut- Wrenches; andwe do declare the following to be a full, clear, and exact descriptionof the nvention, such as will enable others skilled 1n the art to whichit appertains to make and use the same, reference being had to theaccompanyin g drawings, and to the letters of reference marked thereon,which form a part, of this specification.

The invention relates to that class of wrenches in which one jaw isfixed while the other has a sliding adjustment on the shank of the fixedjaw, the outer end of said shank being provided with a handle.

The invention will first be described in connection with the drawingsand then pointed out in the claim.

Figure 1 of the drawings is a plan view of the wrench as an entirety;Fig. 2 a longitudinal vertical section thereof; Fig. 3 a detailperspective of the hollow screws; Fig. 4 a detail view of the fixed jawand shank; Fig. 5 a detail view of the finger bolt and its bearing.

In the drawings, A represents the shank of the fixed jaw having theshoulder a and the opposite shoulders a a, also the rack a.

B is the sliding jaw with a shank having the circular portion 1)internally threaded and the downward projections 19 I) having theinterior rectangular openings to receive the rectangular shank A, theprojection b being made to work up against the shoulder a. In theportion b, Works a screw 0 which is provided with a square holec and isheld loosely therein by a hollow screw D which works in a thread in therear end of portion 6.

E is a bolt having a square shank e which passes through the hollowscrews 0 D, the screw 0 having a square hole to turn with the bolt andthe screw D having a hole large Serial No. 464,301. (No model.)

enough to permit the shank e to turn freely within it.

turned, While 0 is a trunnion which turns in a bearing f of the sleeve Fwhich slides up to the shoulders at a of the shank A.

Between the rack a and the upperend of sleeve F works the finger grip cand against G which has a square hole through it to receive the squaredend of the shank A.

In the end of shank A, on a washer II, we put the screw I whose headpreferably fits in a countersink of the washer.

We are aware that a ratcheted bar, with a screw, is not new; also that aswiveled rod to turn the screw has been keyed to said screw by a pin, asshown in the United States Patent No. 56,460, granted July 17, 1866, toStover; also that the swiveled rod has been connected to the screw bymeans of a collar which turns with the rod and carries the worm around;but

What we claim as new, and wish to protect by 'Letters Patent, is- Theshank A with shoulders at a and rack a the jaw B with circular hollowshank b and hollow projections, 11' b the square holed screw 0, thehollow screw D serving both as an abutment to screw 0 and a bearing forthe bar E, the square barE trunnioned in a sleeve F, and the grip 0 faston said bar and rotatc is the finger grip by which the bolt is 7 thesleeve abuts the inner end of the handle wrench jaw slid thereon bymeans of a hollow -ing between the rack and sleeve, all combined,

JAMES HARDY. BROAD DUNN.

Witnesses:

' O. L. MARSHALL,

MICHAEL HARDY.

